A system and method for charging a weapon. In an illustrative embodiment, a charging assembly attaches to the side of an MK19 grenade launcher. The charging assembly includes a chain that attaches at one end to the charging bolt of the MK19 grenade launcher. The other end of the chain attaches to a crank assembly. The crank assembly includes a handle and a sprocket that rotate around a pivot axis, pulling on the chain and the charging bolt. The sprocket is large enough that the charging bolt is fully drawn by rotating the handle and the sprocket less than one full rotation around the pivot axis.
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